20321067316 has 12 divisors (see below), whose sum is σ = 38794764960. Its totient is φ = 9236848760.

The previous prime is 20321067293. The next prime is 20321067413. The reversal of 20321067316 is 61376012302.

It is a super-2 number, since 2×20321067316² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230921176 + ... + 230921263.

It is an arithmetic number, because the mean of its divisors is an integer number (3232897080).

Almost surely, 2^20321067316 is an apocalyptic number.

It is an amenable number.

20321067316 is a deficient number, since it is larger than the sum of its proper divisors (18473697644).

20321067316 is a wasteful number, since it uses less digits than its factorization.

20321067316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461842454 (or 461842452 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

Adding to 20321067316 its reverse (61376012302), we get a palindrome (81697079618).

The spelling of 20321067316 in words is "twenty billion, three hundred twenty-one million, sixty-seven thousand, three hundred sixteen".